This is an authentic OMEGA Stainless Steel 39mm Speedmaster Chronograph Automatic Watch, Black 3510.50.00. This watch is crafted of stainless steel and features a black dial with three sub-dials, luminous hands and hour markers, a sapphire crystal, and an automatic movement. Follow this item for alerts. Omega is a registered trademark of Omega. FASHIONPHILE is not affiliated with Omega.